No appeal notice has been filed by Ontario's attorney general over the acquittals of a Sarnia business and one of its managers in a deadly workplace explosion.

Attorney general officials in Toronto had been mulling an appeal to the Jan. 5 Sarnia court decision that found Veolia Environmental Services and a manager, Anthony Lavoratore, not guilty of criminal negligence in the 2014 blast.

But the deadline has passed without any notice of appeal being filed.

It was a month ago that Veolia and Lavoratore were acquitted of charges connected to the Oct. 25, 2014 explosion that killed employee Jason Miller, 37, and hurt six others. Justice Deborah Austin ruled there wasn’t proof beyond a reasonable doubt to find the business or Lavoratore guilty – though she stated the company didn’t provide a safe work environment.

The judge’s ruling left Miller’s mother in tears in court.

“A lot of people won’t be happy,” Miller’s father, Doug, said following the verdict. “All these people hurt, and my son died.”

The attorney general had until Monday to decide if there would be an appeal.

The possibility of an appeal was revealed during a recent appearance by Veolia officials on environment ministry charges in relation to the same blast. The matter dealing with the government charges was adjourned until next week, pending the outcome of the appeal considerations.

In granting the adjournment, Justice Mark Hornblower said if there was an appeal it could take one to three years to complete.

The Veolia criminal trial began last January and evidence was presented during many days spread over the past year.

The company was spraying melted aluminum wire on pipes as an anti-corrosion treatment. Combustible dust was ignited by a fireball rolling into the shop from a dust collector parked outside.